function showNumberWithAnimation(i, j, randNumber) {
    var numberCell = $('#number-cell-' + i + "-" + j);
    numberCell.css('background-color', getNumberBackgroundColor(randNumber));
    numberCell.css('color', getNumberColor(randNumber));
    numberCell.text(randNumber);
 
    numberCell.animate({
        width: "100px",
        height: "100px",
        top: getPosition(i),
        left: getPosition(j)
    }, 50);
}
function  showMoveAnimation(fromx, fromy, tox, toy){
    var numberCell = $('#number-cell-' + fromx + '-' +fromy );
    numberCell.animate({
        top:getPosition( tox ),
        left:getPosition( toy )
    },200);
}
function  updateScore(score){
    $('#score').text(score);
}